CN105594663A

CN105594663A - A method for breeding a core group of a new variety of northern Guizhou meat goats

Info

Publication number: CN105594663A
Application number: CN201410657199.5A
Authority: CN
Inventors: 曾宪垠; 宋天增; 冯静; 汪建; 张红平; 曹晓涵; 随芬芬; 刘亚成; 谭遥
Original assignee: Sichuan Agricultural University
Current assignee: Sichuan Agricultural University
Priority date: 2014-11-19
Filing date: 2014-11-19
Publication date: 2016-05-25

Abstract

The invention relates to a method for breeding a core group of a new variety of northern Guizhou meat goats, which is suitable for raising in northern Guizhou districts. The method comprises the steps of: (1) adding the blood lineage of milk goats with Guizhou brown goats as the female parents to obtain an F1 generation; (2) adding the blood lineage of Boer goats with the F1-generation crossbreed ewes as the female parents to obtain F2 generation crossbreed goats; (3) adding the blood lineage of Boer goats continuously to obtain F3-generation crossbreed goats; (4) selecting individuals of GH gene AA type in the F3 generation to establish a base population; (5) performing crossbreed mating fixing on F3-generatin rams and F3-generation ewes to obtain F4-generation crossbreed goats; (6) screening out ewes of GH gene AA type in the F4 generation, selecting and breeding the first-class stud rams, cloning the rams to obtain more than 10 rams which are fed and raised by ewes in milk goats, and weeding out all ewes with single lambs in primiparity in the F3 generation and the filial generation thereof; (7) with the same method and in the same way, performing crossbreed mating fixing on the F4 generation, an F5 generation, an F6 generation and an F7 generation. When the number of the ewes of the base population reaches more than 200, the core group of the new variety of northern Guizhou meat goats can be obtained. The feed conversion efficiency, the growth speed, the dressing percentage and the meat yield of the northern Guizhou meat goats are remarkably higher than those of common northern Guizhou brown goats.

Description

Cultivate the method for north, Guizhou Province meat goat new varieties core group

Technical field

Patent of the present invention relates to a kind of method of animal breeding, especially relates to a kind of method of cultivating north, Guizhou Province meat goat new varieties core group.

Background technology

Although one of Bei Mayangshi Guizhou Province, Guizhou Province three large good Local Goat Breeds, this kind is the product of producing region working people's long-term breeding and natural selection, and local natural ecological condition is had to good adaptability. Have that crude feed tolerance, premunition are strong, wide adaptability, delicious meat delicacy, hide quality better, the excellent feature of production performance. In May, 2009 is in the new genetic resources examination qualification process of Ministry of Agriculture's tissue, expert group of the Ministry of Agriculture has given very high praise to this kind, think " numb sheep truly has feature characteristic to north, Guizhou Province; have larger difference with Chengdu Ma goat ", thereby be smoothly through expert group's situ appraisal, and be approved as new genetic resources December in the same year by the Committee of Experts of the Ministry of Agriculture. But well-known, the numb sheep in north, Guizhou Province, as local characteristic kind, has a lot of inferior positions: grow slowly, Liu month Age, the live body in eight ages in September weight and dressing percentage are all very low, and price of deed rate is low etc.

Current, people are day by day vigorous to mutton demand, and Guizhou Province, backlands district, the Guizhou Province numb sheep degree of self-sufficiency in north and commercialized degree are on the low side, are difficult to meet the demand in market.

In order to improve the index such as the speed of growth, dressing percentage, the price of deed of the numb sheep in Guizhou Province north, uses advanced technological means of the present invention, in conjunction with GENERALIZATION OF MODERN BREEDING TECHNIQUE and traditional breeding way, north, development Guizhou Province advantage Characteristic Stockbreeding, improve goat improved variety degree, cultivating meat goat specific breed, improve the mutton level of production, is the effective means of accelerating the meat goat industry development of north, Guizhou Province.

Summary of the invention

For the numb sheep in Guizhou Province north grow slow Liu month Age, the live body in eight ages in September is heavy and dressing percentage is all very low, the defects such as price of deed rate is low, the invention provides a kind of method of cultivating Guizhou Province north meat goat new varieties core group is provided: import Xi Nongsa can milch goat blood lineage to improve the output of milk, make ewe with more than two lamb healthy development grow up; Importing have the boer goat blood lineage of " king of meat goat ", the large build meat goat of cultivation. Because not yet there is this Hybrid this area so far, the therefore title using the trade mark of the early stage registration of applicant as this new Hybrid, i.e. north, Guizhou Province meat goat. Have reproductive capacity by gained Hybrid of the present invention strong, lambing is many; Dressing percentage is high, produces meat many; Fine and tender taste, good palatability; The price of deed is high, crude feed tolerance, strong adaptability; The features such as the strong and genetic stability of premunition, have great market prospects and economic worth.

For solving the problems of the technologies described above, technical scheme of the present invention is: cultivate the method for north, Guizhou Province meat goat new varieties core group, comprise the following steps:

S1, the numb sheep ewe physique in Guizhou Province north of selecting are strong, and for multiparity primiparity are ewe more than twin lamb(s), quantity is more than 800;

S2, the Xi Nongsa that selects are can milch goat stud ram physique strong, and its father and mother are all kind sheep more than twin lamb(s) from primiparity, and pedigree shows and is the offspring that the output of milk is high;

S2, the boer goat stud ram physique of selecting are strong, be the offspring of ewe more than twin lamb(s), and father and mother are all kind sheep more than twin lamb(s) from primiparity from primiparity;

S3, the strong F3 of screening physique, for male and female sheep, detect GH gene in Hae III restriction enzyme site polymorphism by PCR-RFLP, filter out the genotypic individual establishment underlying group of all AA;

According to the requirement of the S3 of right 1, the primer sequence of GH gene is: 5 ' GACCCAGTTCACCAGACGA-3 ', and 5 ' GGAGAAGCAGAAGGCAACC-3 ', AA genotype clip size is 477/195/93bp;

S4, by the public lamb of GH Gene A A genotype screening, can feed the public lamb of selecting and remain by milch goat ewe by Xi Nongsa;

According to the fast public lamb of anthropometic of selecting and remain in 2 whens wean at monthly ages, June, Age selected in excellent excellent;

Clone more than 10 conduct of classic ram and plant sheep.

Adopted technique scheme, beneficial effect of the present invention is: the average 3.2kg of Guizhou Province north meat goat core group goat birth weight of patent gained of the present invention, and public lamb overweights ewe lamb; 2 average weaning weights of monthly age: ewe 12kg, ram 14kg; 6 monthly age ewe average weight 30kg, wether average weight 36kg; 9 monthly age ewe average weight 36kg, ram 42kg; Age one full year of life ewe average weight 44kg, ram 50kg; Average nest produces twin lamb(s), and three lambs are produced in 10% left and right.

Brief description of the drawings

Fig. 1 is the Technology Roadmap of cultivating north, Guizhou Province meat goat new varieties core group method.

Detailed description of the invention

Select the strong numb sheep ewe in north, Guizhou Province of physique, for primiparity is multiparity ewe more than twin lamb(s), quantity is more than 800, preliminary constructional base group;

Select the strong Xi Nongsa energy milch goat stud ram of physique, it is kind sheep offspring more than twin lamb(s) that its father and mother are primiparity, and pedigree demonstration is the offspring that the output of milk is high;

Select the strong boer goat stud ram of physique, for primiparity is the offspring of ewe more than twin lamb(s), it is kind sheep offspring more than twin lamb(s) that its father and mother are primiparity;

The primer sequence of GH gene is designed to:

5‘-GACCCAGTTCACCAGACGA-3’，5‘-GGAGAAGCAGAAGGCAACC-3’，

AA genotype clip size is 477/195/93bp;

Screen the strong F3 of physique for male and female lamb sheep, detect GH gene in Hae III restriction enzyme site polymorphism by PCR-RFLP, filter out the genotypic individual underlying group of setting up of all AA;

The genotypic public lamb of all AA brought to for 2 monthly ages by the nurture of western agriculture milch goat and weans;

When Age, from anthropometic aspect is excellent, select excellent in stud ram in the public lamb 2 monthly ages wean of all AA genotype and June respectively;

Clone classic stud ram more than 10, large by western agriculture milch goat nurture band after birth.

Finally repeat traversed by and fix 3 times, make core group ewe quantity more than 200, ram is more than 20.

It is strong that north, the Guizhou Province meat goat new varieties core group of patent gained of the present invention has reproductive capacity, and lambing is many; Dressing percentage is high, produces meat many; Fine and tender taste, good palatability; The price of deed is high, crude feed tolerance, strong adaptability; The features such as the strong and genetic stability of premunition.

Claims

1. the method for cultivating north, Guizhou Province meat goat new varieties core group, is characterized in that, comprises the following steps

S4, by the public lamb of GH Gene A A genotype screening, only need to carry out at nascent, in three suboptimums, select the excellent public lamb that selects but will divide according to growing: nascent, wean and June Age.

2. according to the requirement of the S3 of right 1, the primer sequence of GH gene is: 5 ' GACCCAGTTCACCAGACGA-3 ', and 5 ' GGAGAAGCAGAAGGCAACC-3 ', AA genotype clip size is 477/195/93bp.

By Xi Nongsa can milch goat ewe feed the public lamb of selecting and remain, object is that to allow public lamb grow better, when weaning its physique is more strong by contrast, the hereditary effect of physique and meat production is better.